Free Response Practice Question (with solution)- Zodiac Sign Project
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Zodiac Sign Project
Part 1: Date.java
Write the complete class definition for the Date class. The Date class consists of the following:
- int date: represents the date part of the Date.
- int month: represents the month part of the Date.
- int year: represents the year part of the Date.
Additionally,
- The Date class contains a default constructor, that initializes a generic date with all value set to 0 (zero).
- The class also consists of a parameterised constructor Date (int date, int month, int year), to initialize all the attributes of the date.
- Accessor method to access all the properties of the Date class.
Part 2: Celebrity.java
Another class named Celebrity stores the name and the date of birth of the celebrity. Hence, the Celebrity class consists of the following:
- String name: represents the name of the celebrity.
- Date dob: represents the date of birth of the celebrity.
Moreover,
- The Celebrity class contains a default constructor, that initializes a generic celebrity with all value set to 0 (zero)/null.
- The class also consists of a parameterised constructor Celebrity (String name, Date dob), to initialize all the attributes of the celebrity.
- Accessor method to access all the properties of the Celebrity class.
- A method (getZodiac()) calculates and prints the zodiac information for that celebrity using the following data:
Aquarius (January 20 - February 18)
Pisces (February 19 - March 20)
Aries (March 21 - April 19)
Taurus (April 20 - May 20)
Gemini (May 21 - June 20)
Cancer (June 21 - July 22)
Leo (July 23 - August 22)
Virgo (August 23 - September 22)
Libra (September 23 - October 22)
Scorpio (October 23 - November 21)
Sagittarius (November 22 - December 21)
Capricorn (December 22 - January 19)
Part 3: ZodiacRunner.java
Write the complete class definition for the runner class named ZodiacRunner class, that makes use of the Celebrity class. The main method of the ZodiacRunner class should do the following:
- Use the generic constructor to initialize a celebrity object (genCelebrity).
- Use the overloaded constructor to initialize two celebrity objects with valid names and date of births (oneCelebrity, twoCelebrity).
- Use the helper method (getZodiac())) to calculate and print the zodiac sign for each of the three celebrity objects created above.
Solution:
Part 1: Date.java
public class Date {
int date;
int month;
int year;
public Date()
{
date =0;
month=0;
year=0;
}
public Date(int date, int month, int year)
{
this.date=date;
this.month = month;
this.year = year;
}
public int getDate()
{
return date;
}
public int getMonth()
{
return month;
}
public int getYear()
{
return year;
}
}
Part 2:Celebrity.java
public class Celebrity {
String name;
Date dob;
public Celebrity()
{
name=null;
dob= null;
}
public Celebrity(String name, Date dob)
{
this.name = name;
this.dob= dob;
}
public String getName()
{
return name;
}
public Date getDate()
{
return dob;
}
public void getZodiac()
{
String zodiac=null;
if ((this.name != null) && (this.dob !=null))
{
int month = dob.getMonth();
int date = dob.getDate();
switch (month) {
case 1:
if ((date >= 1) && (date <= 19)) zodiac = "Capricorn";
else if ((date >= 20) && (date <= 31)) zodiac= "Aquarius";
break;
case 2:
if ((date >= 1) && (date <= 18)) zodiac= "Aquarius";
else if ((date >= 19) && (date <= 29)) zodiac= "Pisces";
break;
case 3:
if ((date >= 1) && (date <= 20)) zodiac= "Pisces";
else if ((date >= 21) && (date <= 31)) zodiac= "Aries";
break;
case 4:
if ((date >= 1) && (date <= 19)) zodiac= "Aries";
else if ((date >= 20) && (date <= 31)) zodiac= "Taurus";
break;
case 5:
if ((date >= 1) && (date <= 20)) zodiac= "Taurus";
else if ((date >= 21) && (date <= 31)) zodiac= "Gemini";
break;
case 6:
if ((date >= 1) && (date <= 20)) zodiac= "Gemini";
else if ((date >= 21) && (date <= 31)) zodiac= "Cancer";
break;
case 7:
if ((date >= 1) && (date <= 22)) zodiac= "Cancer";
else if ((date >= 23) && (date <= 31)) zodiac= "Leo";
break;
case 8:
if ((date >= 1) && (date <= 22)) zodiac= "Leo";
else if ((date >= 23) && (date <= 31)) zodiac= "Virgo";
break;
case 9:
if ((date >= 1) && (date <= 22)) zodiac= "Virgo";
else if ((date >= 23) && (date <= 31)) zodiac= "Libra";
break;
case 10:
if ((date >= 1) && (date <= 22)) zodiac= "Libra";
else if ((date >= 23) && (date <= 31)) zodiac= "Scorpio";
break;
case 11:
if ((date >= 1) && (date <= 21)) zodiac= "Scorpio";
else if ((date >= 22) && (date <= 31)) zodiac= "Sagittarius";
break;
case 12:
if ((date >= 1) && (date <= 21)) zodiac= "Sagittarius";
else if ((date >= 22) && (date <= 31)) zodiac= "Capricorn";
break;
}
System.out.println("The zodiac sign is: "+ zodiac);
}
else
System.out.println("Name and Date values are null.");
}
}
Part 3: ZodiacRunner.java
public class ZodiacRunner {
public static void main(String args[])
{
Celebrity genCelebrity = new Celebrity();
genCelebrity.getZodiac();
Celebrity oneCelebrity = new Celebrity("Sachin", new Date(2, 2, 1980));
oneCelebrity.getZodiac();
Celebrity twoCelebrity = new Celebrity("Juhi", new Date(3, 4, 1980));
twoCelebrity.getZodiac();
}
}
Java project files (with Runner code):
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